Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas equipes ainda podem se qualificar quando não há equipes que garantiram a qualificação e 52 equipes iniciaram?
 ###Tabelas: CREATE TABLE summary_of_qualification (summary_of_qualification_id AUTO_INCREMENT PRIMARY KEY, Confederation VARCHAR, Teams started VARCHAR, Teams that have secured qualification VARCHAR, Teams that can still qualify VARCHAR, Teams that have been eliminated VARCHAR, Remaining places in finals VARCHAR, Total places in finals VARCHAR, Qualifying start date VARCHAR, Qualifying end date VARCHAR) CREATE TABLE uncials_with_sigla (uncials_with_sigla_id AUTO_INCREMENT PRIMARY KEY, Sign VARCHAR, Name VARCHAR, Date VARCHAR, Content VARCHAR, City VARCHAR, Country VARCHAR) CREATE TABLE bachelorettes (bachelorettes_id AUTO_INCREMENT PRIMARY KEY, Season INT, Premiered VARCHAR, Bachelorette VARCHAR, Profile VARCHAR, Winner VARCHAR, Runner(s)-Up VARCHAR, Proposal VARCHAR) CREATE TABLE previous_championship_encounters (previous_championship_encounters_id AUTO_INCREMENT PRIMARY KEY, Year INT, Venue VARCHAR, Competition VARCHAR, Kilkenny score VARCHAR, Waterford score VARCHAR) CREATE TABLE fighters_with_the_most_awards (fighters_with_the_most_awards_id AUTO_INCREMENT PRIMARY KEY, Fighter VARCHAR, Fights of the Night INT, Knockouts of the Night INT, Submissions of the Night INT, Awards Total INT, Status VARCHAR)  
SELECT Teams that can still qualify FROM summary_of_qualification WHERE Teams that have secured qualification = 0 AND Teams started = 52